I'm not sure what I did - I was experimenting in sshd_config. sshd began to permit logins without benefit of password.
When logging in (I'm using putty from a local windows machine) I enter the user name. I'm presented with the challenge and the password prompt. If hit enter I get the second password prompt with echo on. If I enter anything else to the first password prompt, or anything (or just the enter key) to the second prompt, I find myself logged on.
The allow groups directive in the config file works, only members of grp1 get logged on, but without passwords. This was working correctly before I started fooling around -
any ideas?
Cinfig file follows:
------------------------
# $OpenBSD: sshd_config,v 1.59 2002/09/25 11:17:16 markus Exp $
# $FreeBSD: src/crypto/openssh/sshd_config,v 1.33 2003/09/24 19:20:23 des Exp $
# This is the sshd server system-wide configuration file. See # sshd_config(5) for more information.
# This sshd was compiled with PATH=/usr/bin:/bin:/usr/sbin:/sbin
# The strategy used for options in the default sshd_config shipped with # OpenSSH is to specify options with their default value where # possible, but leave them commented. Uncommented options change a # default value.
# Note that some of FreeBSD's defaults differ from OpenBSD's, and # FreeBSD has a few additional options.
#VersionAddendum FreeBSD-20030924
#Port 22 #Protocol 2,1 #ListenAddress 0.0.0.0 #ListenAddress ::
# HostKey for protocol version 1 #HostKey /etc/ssh/ssh_host_key # HostKeys for protocol version 2 #HostKey /etc/ssh/ssh_host_dsa_key
# Lifetime and size of ephemeral version 1 server key #KeyRegenerationInterval 3600 #ServerKeyBits 768
# Logging #obsoletes QuietMode and FascistLogging #SyslogFacility AUTH #LogLevel INFO
# Authentication:
LoginGraceTime 120 PermitRootLogin no #StrictModes yes
#RSAAuthentication yes PubkeyAuthentication no AuthorizedKeysFile .ssh/authorized_keys
AllowGroups grp1
# rhosts authentication should not be used #RhostsAuthentication no # Don't read the user's ~/.rhosts and ~/.shosts files #IgnoreRhosts yes # For this to work you will also need host keys in /etc/ssh/ssh_known_hosts #RhostsRSAAuthentication no # similar for protocol version 2 #HostbasedAuthentication no # Change to yes if you don't trust ~/.ssh/known_hosts for # RhostsRSAAuthentication and HostbasedAuthentication #IgnoreUserKnownHosts no
# To disable tunneled clear text passwords, change to no here! PasswordAuthentication no PermitEmptyPasswords no
# Change to no to disable PAM authentication ChallengeResponseAuthentication yes
# Kerberos options #KerberosAuthentication no #KerberosOrLocalPasswd yes #KerberosTicketCleanup yes
#AFSTokenPassing no
# Kerberos TGT Passing only works with the AFS kaserver #KerberosTgtPassing no
#X11Forwarding yes #X11DisplayOffset 10 #X11UseLocalhost yes #PrintMotd yes #PrintLastLog yes KeepAlive yes #UseLogin no #UsePrivilegeSeparation yes #PermitUserEnvironment no #Compression yes
#MaxStartups 10 # no default banner path #Banner /some/path #VerifyReverseMapping no
# override default of no subsystems Subsystem sftp /usr/libexec/sftp-server
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